I have a drop-down box which is parent for another drop-down
Meaning that the data in the second drop-down box is
determined by the choice done in the first drop-down box.
This is quite easy to construct with a submit on change. But
this means that the whole page reloads.
I remember that I have seen a solution where the second
drop-down box is populated with data without doing a page reload. I
think that this was done with some kind of roundtrip to the server
retrieving the data and the populating the drop-down box without a